ASTROSAT CZTI

Data Quality Report

Orbit 30438

Creation date: 2024-06-27T20:15:14.389968
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_121T02_9000004378_30438cztM0_level2.evt modeM0/AS1A10_121T02_9000004378_30438cztM0_level2_quad_clean.evt
Size (bytes)601,496,64076,037,760
Size573.6 MB 72.5 MB
Events in quadrant A3,556,860473,030
Events in quadrant B5,237,966470,803
Events in quadrant C3,894,303456,249
Events in quadrant D5,084,360445,542

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145852
B0199833
C0155772
D0194492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6552871.327839%
B65511211.847046%
C65511412.152343%
D65514026.136468%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7637 6552 14 14 0.18% 0.21%
B 7636 6551 1 1 0.01% 0.02%
C 7636 6551 25 25 0.33% 0.38%
D 7636 6551 349 349 4.57% 5.33%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 13 179635 1031.72 870 855 173.3
A 8 192 18930 104.31 870 855 173.3
A 13 254 11346 60.54 870 855 173.3
B 6 159 1813688 11170.81 852 830 162.3
B 0 229 37027 223.05 852 830 162.3
B 0 230 21201 125.53 852 830 162.3
C 3 233 481366 2522.98 823 830 190.5
C 14 238 133490 696.51 823 830 190.5
C 10 22 36658 188.11 823 830 190.5
D 13 104 1242768 5860.1 816 801 211.9
D 8 195 392935 1850.25 816 801 211.9
D 12 227 114973 538.71 816 801 211.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter